聚乳酸生物复合材料含有大量可融化可流动的有机溶解性木质素
Shallal Alshammari1, Amir Ameli1
1Department of Plastics Engineering, University of Massachusetts Lowell, 1 University Ave, Lowell, MA 01854, USA.
International journal of biological macromolecules
|May 28, 2023
概括
这项研究介绍了Bioleum (BL),一种新型的有机溶性红素,与聚乳酸 (PLA) 混合,以创建先进的生物复合材料. 聚乙烯甘醇 (PEG) 显著提高了这些可化加工材料的性和柔性.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 生物复合材料是一种生物复合材料.
背景情况:
- 聚乳酸 (PLA) 是一种具有机械性能限制的可生物降解聚合物.
- 生物质加工的副产品,有机溶解的素,作为可持续填充剂具有潜力.
- 开发可化加工的生物复合材料需要兼容的矩阵和填充系统.
研究的目的:
- 为了研究将生物 (BL),一种新的有机溶性质素,纳入PLA.的可行性.
- 评估BL含量和增塑剂 (聚乙烯甘醇 - PEG,三酸乙烯 - TEC) 对PLA生物复合材料性能的影响.
- 评估BL作为生物复合材料中可持续和可化加工的组件的潜力.
主要方法:
- 融挤出用于将PLA与不同载荷的BL (高达40 wt%) 混合在一起.
- 添加了增塑剂PEG和TEC,以改变材料的特性.
- 综合性表征包括GPC,风学,TGA,DSC,FTIR,SEM和拉力测试.
主要成果:
- 生物 (BL) 显示出适合挤出的可融化流动性特性.
- 生物复合材料表现出高抗拉强度,超过了之前报告的许多材料.
- 增加的BL含量导致了更大的域大小,降低了强度和柔性.
- 与PLA_BL2020相比,PEG5显著提高了柔性和性,PLA_BL20_PEG5在断裂时显示了9倍以上的延伸.
结论:
- 生物 (BL) 是一个有前途的,可化加工的组件,用于开发高性能PLA生物复合材料.
- 添加PEG在提高PLA-BL生物复合材料的柔性和性方面非常有效.
- 这些发现支持从素和PLA开发可扩展,可持续的生物复合材料.
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